You know when it's 2AM and that story idea comes to you? No? Well, this is what I come up with, but don't worry only the idea emerged at 2AM the actually story was written after some good sleep. Enjoy!

Disclaimer: I don't own Yu-Gi-Oh!

Five thousand years ago Pharaoh Atem locked away a great evil because he knew he couldn't defeat it on his own. He did this by trapping it all inside his Millennium Puzzle. To complete the spell though, he had to trap himself inside the puzzle as well.

Now that seemed all well and good in his head, but he did not know of the consequences of the spell he was casting. He mistakenly thought that he would be locking all of himself, but the puzzle wasn't interested in his whole soul. No, the puzzle only wanted the part of his soul that consisted of his darkest thoughts, the part of him that was not to be shown to his people, his darkness. This is what was locked away in the puzzle and what was forced to live through five thousand years of torture.

The part that was left, his light, was not able to go back into the body for it didn't know how to survive on its own. Knowing that it was still needed though, for when the dark side was released once more, it was reincarnated to a time when it could stop the evil for good.

Five thousand years later to be exact. Neither light nor dark knew of the past however, and did not know of the forthcoming danger. When the light put the puzzle together, it did not know it would be releasing a dark entity or an evil that needed to be defeated, all it was doing was trying to grant an innocent wish for friends. When it awakened, all the dark knew was that it needed to fiercely protect its light and all the light knew was that the dark would never hurt it.

They both grew from one another, the light learned to be more confident and strong from the dark, and the dark learned kindness and mercy from its light. They continued to grow with one another and their bond growing stronger and stronger by the day. It was through this continuingly growing bond that they both felt it though. That deep sense of being too far from one another and not feeling complete.

They hadn't known what was causing this feeling to arise, but they felt it lessen when they had their secret little visits to each others soul rooms. The places where they could be closer than anywhere else in the room and where everything was left wide open for their other half to see.

It was during these visits that they talked and confided their feeling in each other. The light was more bothered by this feeling of incompleteness than the dark was so much of the time was spent with the dark comforting the light, but they talked about other things as well. The dark would tell the light its inner fears that he would never reveal to anyone else due to his pride, and the light would tell the dark all about the outside world that he didn't get to experience the same way as the light did.

The dark did acknowledge that he lacked something however, he knew that he should have some clue to what his life was before he was a spirit in the puzzle. He knew that he should have memories of some sort, but he didn't and it was during the visits that they would also talk about it and how they could get them back. The light was devoted to helping the dark in return for how devoted the dark was to protecting him and keeping him happy.

They had a special relationship that could not be described in words. It was not love and yet it was. They were more intimate than that of brothers, but did not have the intimacy of lovers. It was just a craving of needing to be with one another.

This was only natural considering their nature. Two halves would naturally want to become one at some point, but for these two souls that would not be possible. The spell the separated them was a permanent one that could not be reversed. They were forever doomed to be apart from each other and that would ruin them even if they did not notice it.

Yugi, what the light is now dubbed, was already more closed off from others before he solved the puzzle, because he did not fit in. It wasn't because of what he liked or how he looked, he just couldn't comprehend friendships the same as everyone else because he wasn't even whole himself so how could he understand the bond that two people shared?

Yami, what the dark was affectionately dubbed by the light, when without his light was cold a merciless. He only cared for his light, he pretended to show Yugi's friends care, but he only really cared because they made Yugi happy. Yami knew he wasn't friends with them like Yugi was and he didn't mind it at all, he was content as long as Yugi was happy. This also had caused the dark to bring out his possessive side. One of its most primal emotions was its possessiveness, the dark had already lost so much after being locked in the puzzle, so losing the light was not an option for it. It almost began to want to close the light off from the world so the dark could have it all to itself, but the dark knew that wouldn't make the light happy so it forced itself to stop those feeling from taking control.

It was because of this fragile relationship, that if for whatever reason one had to leave, the other would not last very long. If the dark left, the light would close itself off again because of the emptiness it felt. If the light left the dark would grow out of control because the light wouldn't be there to control it. It would also become angry and cold once more because the dark's only source of happiness dwelled in the light and without it, the dark would not be happy.

Other people in the world could never understand this problem and so when one does eventually leave and the light or dark start to self-destruct, their so called friends and loved ones will leave as well. No matter how good of a friend they say they are or how much they loved them, they always leave because they just don't understand and can't deal with it.

So let us hope that nothing separates the two even more than they already are. Let us hope that no reason on this planet will force them to lose contact with each other because it will not be a pretty sight to see. Watching them fall apart will be a horrific thing to witness. They already have enough pain to deal with, the least we can do is allow them to have each other.

And that's the end of the first chapter! I will be writing one for both Ryou and Bakura and Malik and Marik. Yes Marik and Malik will get a chapter because I consider them a hikari and yami pair, just sort of one that went wrong and works differently. Then an epilogue will be written as sort of a post series look of what happened to the 3 people who had spirits/ other personalities to deal with. I hope you liked this R&R plz :)